We Are Measuring the Spectra of Two Hydrogen Gas Clouds

question 98

Multiple Choice

We are measuring the spectra of two hydrogen gas clouds. The laboratory frame wavelength of one hydrogen line is 656.2 nm. Cloud A's emission line wavelength is 660.1 nm and Cloud B's emission line wavelength is 670.1 nm. What can we conclude about these clouds?

• A)They are both approaching us, and Cloud A is approaching faster than Cloud B.
• B)They are both approaching us, and Cloud B is approaching faster than Cloud A.
• C)They are both receding from us, and Cloud A is receding faster than Cloud B.
• D)They are both receding from us, and Cloud B is receding faster than Cloud A.

Calculate the economic cost associated with reducing inflation using the sacrifice ratio.

Grasp the theory of rational expectations in forecasting future economic conditions.

Analyze the impact of monetary policy announcements on inflation expectations and Phillips curves.

Examine the effects of economic crises on price levels and output.

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Definitions:

Stamp Act Congress

A meeting of delegates from several American colonies in 1765, formed to protest the British Stamp Act and organize resistance.

Declaratory Act

A law passed by the British Parliament in 1766 stating that the British government had the same power to tax and make laws for the American colonies "in all cases whatsoever" as it did in Britain.

Stamp Act

Parliament’s 1765 requirement that revenue stamps be affixed to all colonial printed matter, documents, and playing cards; the Stamp Act Congress met to formulate a response, and the act was repealed the following year.